US3630655A
Expired / Lapsed
US
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Dyeing human hair with oxidation dyes comprising heterocyclic amino compounds
Assignee: Therachemie Chemische Therapeutische GmbH
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Filing: 1968-10-22
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Granted: 1971-12-28
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Expires: 1988-10-22
Abstract
Abstract The novel means for dyeing human hair according to the invention are based on oxidation dyes and comprise heterocyclic amino compounds and suitable coupling components. For example, 2 parts of 6-aminotetrahydroquinoline hydrochloride, 1 part of Alpha naphthol, 1 part of hydrogen peroxide are mixed with 96 parts of water and adjusted to a pH of 9.5. By treating gray human hair with the resulting solution a dark blue coloration is obtained. The hair dyes according to the invention have, in addition to other favorable characteristics, the advantage of being easily removable from the hair, e.g., by reducing agents.
Inventors
- 👤 Peter Berth
- 👤 Rudolf Maul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:28
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/10; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/4906; A61K8/4913; A61K8/492; A61K8/4926; A61K8/494
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
33 words
The process of claim 1 wherein said heterocyclic amino compound is in the form of an acid addition salt of a strong acid selected from the group consisting of inorganic and organic acids.
Claim 2
Dependent Claim
51 words
The process of claim 1 wherein said aqueous solution has a further content of from 0.5 to 30 percent by weight of an agent selected from the group consisting of alkylbenzene sulfonates, fatty alcohol sulfates, alkylsulfonates, fatty acid ethanolamides, ethylene oxide adducts of fatty alcohols and ethylene oxide adducts of alkylphenols.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein said aqueous solution has a further content of a chemical oxidizing agent.
Claim 4
Dependent Claim
34 words
The process of claim 1 wherein said heterocyclic amino compound is selected from the group consisting of 6-amino-tetrahydroquinoline, 1-ethyl-6-aminotetrahydroquinoline, 1-( Beta -hydroxyethyl)-6-aminotetrahydroquinoline, 4-methyl-7-aminodihydrobenzoxaine-(1,4), 1-( Beta -hydroxyethyl)-2-methyl-5-aminoindolenine, 2-methyl-5aminoindolenine, 5-aminoindazolone-3, 7-amino-2-oxo-tetrahydroquinoxaline, 6-aminotetrahydroquinoxaline, 1-methyl-6,8-diaminotetRahydroquinoline diaminotetrahydroquinoline and 1-methyl-6-amino-8-methoxytetrahydroquinoline.
References Cited (Backward Citations)
US2196739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |